First, what materials are available on the market, and what are the differences in quality?
Currently, there are mainly 304, 201, and 301 materials on the market. The difference is mainly caused by the different contents of chromium and nickel. Material 304 contains 18 chromium and 8-9 nickel, while materials 201 and 301 only contain 14 and 16 chromium and 1 and 5 nickel respectively. According to scientific demonstration, stainless steel pipe with high chromium and nickel content and good smelting technology has better performance, stronger corrosion resistance, and stronger finish durability.
Second, why are the prices of 201 and 301 lower than those of material 304? Beware of counterfeit “304″.
Because the material contains low chromium and nickel, the price of purchasing raw materials is cheap. For example, 999 pure gold and 18K gold are the same, but the gold content is different, so the price is different. Therefore, the price of 201 and 301 is relatively low. Some bad manufacturers use 201 and 301 steel pipes and also engrave “304″. Please understand it in many aspects when purchasing and beware of being deceived.
Third, why are the quality and prices of 304 pipes of the same material different?
At present, the raw materials are imported and produced by large and small domestic manufacturers. Although they are all made of 304 material, the smelting technology and chemical element content indicators of each manufacturer are different, the quality is different, and the price difference is about 10%. In addition, the manufacturing process of each steel pipe factory also has quality differences, and the performance and corrosion resistance after use are also strong and weak. Even if the poor quality does not rust shortly, it will turn gray, yellow, or even rust over time. Faced with the uneven and complex stainless steel market and the century-long plan related to house building decoration, you must make a wise choice. Hereby remind users in coastal areas not to be greedy for small profits, so as not to regret it.
Fourth, how to buy high-quality stainless steel pipes?
1. Check whether the material “304″ is printed on the surface of the pipe, and ask for the manufacturer’s quality certificate and quality guarantee.
2. Test with acidic reagent. After 30 seconds, material 304 does not change color, and 201 turns black.
3. Check whether the color of the outer surface and the inner wall of the pipe is bright and smooth and whether the thickness is uniform or rough.
4. When purchasing, you should choose famous brand products at the provincial level or above evaluated by the Quality and Technical Supervision Bureau. Long-term use testimony and a good reputation among customers are the most direct and effective purchase methods.
Fifth, how to correctly use and maintain stainless steel pipes to ensure that the products are bright and beautiful?
1. Avoid cutting iron sparks during welding and avoid friction with ironware.
2. Be careful of cement, lime, oil residue, and other debris pollution, and avoid contact with acidic items.
3. Use double fly powder or cloth for cleaning, and avoid using sewage and detergent.
Post time: Nov-14-2024